/* roulang page: index */
:root {
            --primary: #16213e;
            --primary-2: #0f3460;
            --accent: #f97316;
            --accent-light: #fb923c;
            --accent-dark: #ea580c;
            --bg-body: #f4f6fb;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e8ecf3;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(2, 12, 27, .06);
            --shadow-md: 0 10px 30px rgba(2, 12, 27, .08);
            --shadow-lg: 0 24px 60px rgba(2, 12, 27, .14);
            --sidebar-w: 264px;
            --transition: .25s cubic-bezier(.4, 0, .2, 1);
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container-narrow {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 侧边栏 */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-w);
            background: linear-gradient(180deg, #0b1220 0%, #151e2e 100%);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            border-right: 1px solid rgba(255, 255, 255, .06);
            box-shadow: 4px 0 30px rgba(0, 0, 0, .25);
            transition: transform var(--transition);
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 22px;
            margin-bottom: 8px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 6px 18px rgba(249, 115, 22, .35);
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 16.5px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            letter-spacing: .5px;
        }
        .brand-text span {
            display: block;
            font-size: 12px;
            font-weight: 400;
            color: rgba(255, 255, 255, .5);
            letter-spacing: 1px;
            margin-top: 2px;
        }
        .sidebar-nav {
            margin-top: 18px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: 12px;
            color: rgba(255, 255, 255, .72);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            position: relative;
        }
        .sidebar-link i {
            width: 22px;
            text-align: center;
            font-size: 16px;
            opacity: .8;
        }
        .sidebar-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
            transform: translateX(2px);
        }
        .sidebar-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(249, 115, 22, .2), rgba(249, 115, 22, .12));
            box-shadow: inset 0 0 0 1px rgba(249, 115, 22, .35);
        }
        .sidebar-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            border-radius: 0 4px 4px 0;
            background: var(--accent);
        }
        .sidebar-link.active i {
            color: var(--accent);
            opacity: 1;
        }
        .sidebar-foot {
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding-top: 16px;
            text-align: center;
        }
        .sidebar-foot .support-card {
            background: rgba(255, 255, 255, .04);
            border-radius: 14px;
            padding: 14px 12px;
            border: 1px solid rgba(255, 255, 255, .06);
        }
        .sidebar-foot .support-card .ico {
            color: var(--accent-light);
            font-size: 18px;
        }
        .sidebar-foot .support-card .txt {
            color: rgba(255, 255, 255, .65);
            font-size: 13px;
            margin-top: 4px;
            line-height: 1.5;
        }
        .sidebar-foot .copy {
            font-size: 12px;
            color: rgba(255, 255, 255, .3);
            margin-top: 12px;
        }

        /* 遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 1040;
            backdrop-filter: blur(2px);
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* 主内容区 */
        .app-main {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* 移动端顶栏 */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(15, 23, 42, .95);
            backdrop-filter: blur(12px);
            padding: 14px 20px;
            align-items: center;
            justify-content: space-between;
        }
        .topbar-brand {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .topbar-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 15px;
            border-radius: 10px;
        }
        .topbar-toggle {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 10px;
            color: #fff;
            width: 42px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .topbar-toggle:hover {
            background: rgba(255, 255, 255, .2);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 130px 0 120px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 18, 32, .96) 0%, rgba(15, 52, 96, .82) 45%, rgba(249, 115, 22, .28) 100%);
        }
        .hero::after {
            content: '';
            position: absolute;
            right: -160px;
            top: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(249, 115, 22, .25) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 13px;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            color: var(--accent-light);
        }
        .hero-title {
            font-size: clamp(32px, 5vw, 54px);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin: 0 0 18px;
        }
        .hero-title .highlight {
            color: var(--accent-light);
            position: relative;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 34px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 30px;
        }
        .btn-hero {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 14px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-hero.primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            box-shadow: 0 10px 30px rgba(249, 115, 22, .35);
        }
        .btn-hero.primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(249, 115, 22, .45);
        }
        .btn-hero.ghost {
            background: rgba(255, 255, 255, .1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .25);
            backdrop-filter: blur(8px);
        }
        .btn-hero.ghost:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-3px);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-meta i {
            color: var(--accent-light);
        }

        /* 通用板块 */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-card);
        }
        .section-head {
            margin-bottom: 48px;
            max-width: 680px;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            background: rgba(249, 115, 22, .1);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 5px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 特色卡片 */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(249, 115, 22, .3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(249, 115, 22, .12), rgba(249, 115, 22, .06));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 14.5px;
            line-height: 1.7;
            margin: 0;
        }

        /* 分类卡片 */
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 320px;
            display: block;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: none;
        }
        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover img {
            transform: scale(1.05);
        }
        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(15, 23, 42, .95) 100%);
        }
        .category-card .cat-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 28px;
            z-index: 2;
            color: #fff;
        }
        .category-card .cat-content .cat-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(249, 115, 22, .9);
            border-radius: 30px;
            padding: 4px 12px;
            font-size: 12.5px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .category-card .cat-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card .cat-content p {
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            margin: 0;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        /* 热门游戏 */
        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .game-cover {
            position: relative;
            padding-top: 75%;
            overflow: hidden;
        }
        .game-cover img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .game-card:hover .game-cover img {
            transform: scale(1.06);
        }
        .game-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, .75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, .15);
        }
        .game-body {
            padding: 22px 22px 26px;
        }
        .game-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .game-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .game-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }
        .game-meta .rate {
            color: var(--accent);
            font-weight: 600;
        }

        /* 资讯卡片 */
        .news-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-img {
            position: relative;
            padding-top: 62%;
            overflow: hidden;
        }
        .news-img img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-item:hover .news-img img {
            transform: scale(1.04);
        }
        .news-img .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            box-shadow: 0 4px 12px rgba(249, 115, 22, .3);
        }
        .news-body {
            padding: 20px 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-body .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-body .meta i {
            color: var(--accent);
        }
        .news-body h3 {
            font-size: 16.5px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body h3 a:hover {
            color: var(--accent);
        }
        .news-body .desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 500;
            margin-top: 14px;
        }
        .news-link:hover {
            gap: 8px;
            color: var(--accent-dark);
        }
        .empty-tip {
            text-align: center;
            padding: 50px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* 数据统计 */
        .stats-section {
            background: linear-gradient(135deg, var(--bg-dark), #1a2333);
            color: #fff;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(249, 115, 22, .15), transparent 70%);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 36px;
            text-align: center;
        }
        .stat-item .num {
            font-size: clamp(36px, 4vw, 52px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-item .num span {
            color: var(--accent-light);
        }
        .stat-item .label {
            font-size: 15px;
            color: rgba(255, 255, 255, .6);
            margin-top: 8px;
            letter-spacing: 1px;
        }
        .stat-item .ico {
            font-size: 26px;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* 流程步骤 */
        .step-card {
            text-align: center;
            position: relative;
            padding: 0 12px;
        }
        .step-num {
            width: 64px;
            height: 64px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-size: 24px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 12px 30px rgba(249, 115, 22, .35);
            position: relative;
            z-index: 2;
        }
        .step-card::after {
            content: '';
            position: absolute;
            top: 32px;
            left: 50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, rgba(249, 115, 22, .5), rgba(249, 115, 22, .1));
            z-index: 1;
        }
        .step-card:last-child::after {
            display: none;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(249, 115, 22, .3);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item summary {
            padding: 22px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            color: var(--text-main);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item details[open] summary {
            border-bottom: 1px solid var(--border);
        }
        .faq-answer {
            padding: 18px 24px 24px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            padding: 90px 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 18, 32, .94), rgba(15, 52, 96, .85));
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            color: #fff;
        }
        .cta-box h2 {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 28px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .6);
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-grid p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, .6);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .section {
                padding: 70px 0;
            }
            .stats-grid {
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .app-sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .app-main {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .hero {
                padding: 90px 0 80px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-hero {
                width: 100%;
                justify-content: center;
            }
            .container-narrow {
                padding: 0 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 20px;
            }
            .step-card::after {
                display: none;
            }
            .section {
                padding: 56px 0;
            }
            .category-card {
                height: 260px;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding: 70px 0 60px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-meta {
                gap: 14px;
                font-size: 13px;
            }
            .section-title {
                font-size: 23px;
            }
            .feature-card {
                padding: 26px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-item .num {
                font-size: 30px;
            }
            .faq-item summary {
                padding: 18px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 14px 16px 20px;
            }
        }

        /* 焦点可见 */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(249, 115, 22, .5);
            outline-offset: 2px;
            border-radius: 6px;
        }

/* roulang page: category1 */
:root {
            --primary: #6c5ce7;
            --primary-dark: #5749c7;
            --primary-light: #a29bfe;
            --secondary: #00b894;
            --secondary-dark: #00a381;
            --accent: #fd79a8;
            --dark: #1e1e2e;
            --dark-light: #2d2d44;
            --bg: #f0f1f6;
            --card-bg: #ffffff;
            --text: #2d2d3a;
            --text-muted: #6c6c7e;
            --border: #e4e5ef;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(30, 30, 46, 0.06);
            --shadow-md: 0 8px 30px rgba(30, 30, 46, 0.08);
            --shadow-lg: 0 20px 60px rgba(30, 30, 46, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-narrow {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航栏 ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: 260px;
            flex-shrink: 0;
            background: var(--dark);
            color: #fff;
            padding: 28px 20px;
            position: sticky;
            top: 0;
            height: 100vh;
            display: flex;
            flex-direction: column;
            z-index: 1050;
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 8px 8px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 24px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            letter-spacing: 0.5px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-nav {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex-grow: 1;
        }

        .sidebar-nav .nav-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: rgba(255, 255, 255, 0.4);
            padding: 12px 12px 8px;
            font-weight: 600;
        }

        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .sidebar-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .sidebar-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateX(4px);
        }

        .sidebar-link.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.35);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .sidebar-footer {
            padding-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        /* 主内容区 */
        .main-content {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* 顶部栏 */
        .topbar {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1040;
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            gap: 16px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .mobile-menu-btn:hover {
            background: var(--bg);
        }

        .topbar-search {
            flex: 1;
            max-width: 480px;
            position: relative;
        }

        .topbar-search input {
            width: 100%;
            padding: 10px 16px 10px 42px;
            border: 1px solid var(--border);
            border-radius: 50px;
            background: var(--bg);
            font-size: 14px;
            transition: all var(--transition);
            outline: none;
        }

        .topbar-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.12);
        }

        .topbar-search i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
        }

        .topbar-actions {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-topbar {
            padding: 9px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            border: none;
            transition: all var(--transition);
        }

        .btn-outline-topbar {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
        }

        .btn-outline-topbar:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(108, 92, 231, 0.05);
        }

        .btn-solid-topbar {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 15px rgba(108, 92, 231, 0.25);
        }

        .btn-solid-topbar:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
            color: #fff;
        }

        /* 移动端抽屉遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1045;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .sidebar-overlay.show {
            display: block;
            opacity: 1;
        }

        /* ===== Banner ===== */
        .category-banner {
            background: linear-gradient(135deg, var(--dark) 0%, #2a2a44 50%, var(--primary-dark) 100%);
            padding: 60px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.3), transparent 70%);
            border-radius: 50%;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .banner-content .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }

        .banner-content .banner-tag i {
            color: var(--primary-light);
        }

        .banner-content h1 {
            color: #fff;
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .banner-content h1 span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .banner-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            margin-bottom: 28px;
            max-width: 620px;
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .banner-stat {
            display: flex;
            flex-direction: column;
        }

        .banner-stat strong {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
        }

        .banner-stat span {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 64px 0;
        }

        .section-header {
            margin-bottom: 36px;
        }

        .section-header .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 560px;
        }

        .section-header .header-link {
            float: right;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding-top: 8px;
        }

        .section-header .header-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* ===== 筛选标签 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .filter-tag {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            cursor: pointer;
            transition: all var(--transition);
            font-weight: 500;
        }

        .filter-tag:hover,
        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 92, 231, 0.25);
        }

        /* ===== 游戏卡片 ===== */
        .game-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }

        .game-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: rgba(108, 92, 231, 0.3);
        }

        .game-card-cover {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--dark-light);
        }

        .game-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .game-card:hover .game-card-cover img {
            transform: scale(1.05);
        }

        .game-card-cover .game-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(10px);
            color: #fff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .game-card-cover .game-rating {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(10px);
            color: #ffd700;
            padding: 4px 10px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
        }

        .game-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .game-card-body h3 a {
            color: var(--text);
        }

        .game-card-body h3 a:hover {
            color: var(--primary);
        }

        .game-card-body .game-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .game-card-body .game-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .game-card-body .game-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        .game-type-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-muted);
            background: var(--bg);
            padding: 4px 10px;
            border-radius: 50px;
        }

        .btn-play {
            padding: 7px 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            border: none;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-play:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
            color: #fff;
        }

        /* ===== 品类区块 ===== */
        .genre-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all var(--transition);
            height: 100%;
            display: block;
            position: relative;
            overflow: hidden;
        }

        .genre-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }

        .genre-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }

        .genre-card:hover::before {
            opacity: 1;
        }

        .genre-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(108, 92, 231, 0.2));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 26px;
            color: var(--primary);
            transition: all var(--transition);
        }

        .genre-card:hover .genre-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            transform: scale(1.05);
        }

        .genre-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .genre-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .genre-card .genre-count {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            background: rgba(108, 92, 231, 0.08);
            padding: 3px 10px;
            border-radius: 50px;
        }

        /* ===== 热门排行 ===== */
        .ranking-wrap {
            background: linear-gradient(180deg, #f8f9fd, #fff);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px;
        }

        .ranking-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 16px;
            border-radius: 12px;
            transition: background var(--transition);
        }

        .ranking-item:hover {
            background: rgba(108, 92, 231, 0.04);
        }

        .ranking-num {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            background: var(--bg);
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .ranking-item:nth-child(1) .ranking-num,
        .ranking-item:nth-child(2) .ranking-num,
        .ranking-item:nth-child(3) .ranking-num {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
        }

        .ranking-cover {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg);
        }

        .ranking-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .ranking-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-info h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-info p {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: #e17055;
            font-weight: 600;
            background: rgba(225, 112, 85, 0.1);
            padding: 3px 10px;
            border-radius: 50px;
            flex-shrink: 0;
        }

        /* ===== 新游/资讯 ===== */
        .news-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all var(--transition);
            height: 100%;
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .news-badge {
            font-size: 12px;
            background: rgba(0, 184, 148, 0.1);
            color: var(--secondary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-card h3 a {
            color: var(--text);
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 平台特色 ===== */
        .feature-block {
            background: var(--dark);
            border-radius: 20px;
            padding: 48px;
            position: relative;
            overflow: hidden;
            margin: 24px 0;
        }

        .feature-block::before {
            content: '';
            position: absolute;
            right: -100px;
            top: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.3), transparent 70%);
            border-radius: 50%;
        }

        .feature-block::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 184, 148, 0.2), transparent 70%);
            border-radius: 50%;
        }

        .feature-block .feature-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .feature-item i {
            font-size: 32px;
            margin-bottom: 14px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .feature-item h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .feature-item p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item.active {
            border-color: rgba(108, 92, 231, 0.3);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 60px;
        }

        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #4a3db5 100%);
            border-radius: 24px;
            padding: 52px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.12;
        }

        .cta-block h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-block p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            font-weight: 700;
            font-size: 15px;
            transition: all var(--transition);
        }

        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
            background: #f8f9ff;
        }

        .btn-cta-outline {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
        }

        .btn-cta-outline:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            max-width: none;
        }

        /* ===== 移动端导航 ===== */
        .mobile-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            transform: translateX(-100%);
            z-index: 1060;
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .mobile-sidebar.open {
            transform: translateX(0);
        }

        .mobile-sidebar .sidebar {
            height: 100%;
            position: static;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1200px) {
            .feature-block .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .sidebar {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .topbar-inner {
                padding: 0 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .banner-content h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 48px 0;
            }

            .category-banner {
                padding: 48px 0;
            }

            .banner-stats {
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-block {
                padding: 40px 24px;
            }

            .cta-block h2 {
                font-size: 26px;
            }

            .feature-block {
                padding: 32px 24px;
            }

            .ranking-wrap {
                padding: 20px;
            }

            .ranking-info h4 {
                font-size: 14px;
            }

            .ranking-hot {
                display: none;
            }

            .topbar-search {
                display: none;
            }

            .topbar-actions .btn-outline-topbar {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .container-narrow {
                padding: 0 16px;
            }

            .banner-content h1 {
                font-size: 24px;
            }

            .banner-content p {
                font-size: 14px;
            }

            .banner-stat strong {
                font-size: 20px;
            }

            .banner-stat span {
                font-size: 12px;
            }

            .feature-block .feature-grid {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .game-card-body h3 {
                font-size: 16px;
            }

            .btn-cta-primary,
            .btn-cta-outline {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
            --primary: #7c3aed;
            --primary-dark: #5b21b6;
            --primary-light: #ede9fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f4f6fb;
            --bg-sidebar: #111827;
            --bg-card: #ffffff;
            --text-main: #1f2937;
            --text-muted: #6b7280;
            --border: #e5e7eb;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 1px 3px rgba(17,24,39,.05);
            --shadow: 0 4px 20px rgba(17,24,39,.06);
            --shadow-lg: 0 12px 40px rgba(17,24,39,.12);
            --transition: all .25s ease;
            --sidebar-w: 260px;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; }
        .container-narrow { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-sidebar);
            padding: 28px 18px 20px;
            overflow-y: auto;
            z-index: 1050;
            display: flex;
            flex-direction: column;
            transition: transform .3s ease;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 10px 22px;
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            border-bottom: 1px solid rgba(255,255,255,.08);
            letter-spacing: .3px;
            line-height: 1.4;
        }
        .sidebar-logo i { color: var(--accent); font-size: 23px; flex-shrink: 0; }
        .sidebar-nav { margin-top: 22px; flex: 1; }
        .nav-label {
            font-size: 12px;
            color: rgba(255,255,255,.45);
            text-transform: uppercase;
            letter-spacing: 2px;
            padding: 0 12px;
            margin-bottom: 8px;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: rgba(255,255,255,.72);
            font-size: 15px;
            font-weight: 500;
            margin-bottom: 4px;
            transition: var(--transition);
        }
        .sidebar-link i { width: 20px; text-align: center; font-size: 16px; opacity: .9; }
        .sidebar-link:hover { background: rgba(255,255,255,.07); color: #fff; transform: translateX(3px); }
        .sidebar-link.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 6px 18px rgba(124,58,237,.35);
        }
        .sidebar-tip {
            background: rgba(255,255,255,.05);
            border: 1px solid rgba(255,255,255,.08);
            border-radius: 14px;
            padding: 16px;
            margin-top: 20px;
        }
        .sidebar-tip h4 { color: #fff; font-size: 14px; margin-bottom: 6px; }
        .sidebar-tip p { color: rgba(255,255,255,.55); font-size: 13px; margin-bottom: 12px; line-height: 1.6; }
        .btn-mini {
            display: inline-block;
            padding: 7px 16px;
            background: var(--accent);
            color: #111 !important;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            transition: var(--transition);
        }
        .btn-mini:hover { background: var(--accent-dark); transform: translateY(-2px); }

        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--bg-sidebar);
            z-index: 1040;
            align-items: center;
            padding: 0 16px;
            gap: 12px;
        }
        .menu-toggle {
            background: none;
            border: 0;
            color: #fff;
            font-size: 20px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            transition: var(--transition);
        }
        .menu-toggle:hover { background: rgba(255,255,255,.08); }
        .mobile-logo { font-size: 17px; font-weight: 800; color: #fff; line-height: 1.4; }
        .mobile-mask {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15,23,42,.6);
            backdrop-filter: blur(4px);
            z-index: 1045;
        }
        .mobile-mask.show { display: block; }

        .main-wrap {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .content-wrap { flex: 1; }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            padding: 26px 0 8px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a { color: var(--primary); font-weight: 500; }
        .breadcrumb-nav a:hover { text-decoration: underline; }
        .breadcrumb-nav .sep { color: #d1d5db; font-size: 12px; }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 28px;
            margin-top: 18px;
            align-items: start;
        }
        .article-main { min-width: 0; }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 34px 38px;
            box-shadow: var(--shadow);
        }
        .article-card.not-found { text-align: center; padding: 70px 40px; }
        .article-card.not-found h1 { font-size: 30px; font-weight: 800; margin-bottom: 12px; }
        .article-card.not-found p { color: var(--text-muted); margin-bottom: 26px; }
        .article-cat {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
        }
        .article-title {
            font-size: 31px;
            line-height: 1.4;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: -.5px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-muted);
            font-size: 14px;
            padding-bottom: 20px;
            margin-bottom: 22px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta span i { margin-right: 6px; }
        .article-banner { border-radius: 14px; overflow: hidden; margin-bottom: 28px; position: relative; }
        .article-banner img { width: 100%; height: 330px; object-fit: cover; }

        .article-body { font-size: 16px; line-height: 1.95; color: #374151; overflow-wrap: break-word; }
        .article-body h2, .article-body h3 { color: var(--text-main); font-weight: 750; margin-top: 32px; margin-bottom: 14px; }
        .article-body h2 { font-size: 23px; padding-left: 14px; border-left: 4px solid var(--primary); }
        .article-body h3 { font-size: 19px; }
        .article-body p { margin-bottom: 18px; }
        .article-body a { color: var(--primary); font-weight: 600; border-bottom: 1px solid transparent; }
        .article-body a:hover { border-bottom-color: var(--primary); }
        .article-body ul, .article-body ol { margin-bottom: 18px; padding-left: 22px; }
        .article-body ul li { list-style: disc; margin-bottom: 8px; }
        .article-body ol li { list-style: decimal; margin-bottom: 8px; }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: #4b5563;
        }
        .article-body img { border-radius: 12px; margin: 22px 0; }
        .article-body table { width: 100%; border-collapse: collapse; margin: 22px 0; }
        .article-body table th, .article-body table td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
        .article-body table th { background: var(--primary-light); font-weight: 700; }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }
        .tag {
            background: #f3f4f6;
            color: var(--text-muted);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 30px;
            transition: var(--transition);
        }
        .tag:hover { background: var(--primary-light); color: var(--primary-dark); }

        .article-side { display: flex; flex-direction: column; gap: 20px; }
        .side-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px;
            box-shadow: var(--shadow-sm);
        }
        .side-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .side-card h3::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 44px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .side-news-item {
            display: block;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
            transition: var(--transition);
        }
        .side-news-item:last-child { border-bottom: 0; padding-bottom: 0; }
        .side-news-item:hover { padding-left: 8px; }
        .side-news-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .side-news-item:hover .side-news-title { color: var(--primary); }
        .side-news-item time { font-size: 12px; color: var(--text-muted); display: block; margin-top: 5px; }
        .side-cat-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 14px;
            background: #f9fafb;
            border-radius: 10px;
            margin-bottom: 10px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .side-cat-link:last-child { margin-bottom: 0; }
        .side-cat-link i { color: var(--primary); }
        .side-cat-link:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateX(4px); }

        .related-section { margin-top: 46px; }
        .section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
        .section-head h2 { font-size: 24px; font-weight: 800; letter-spacing: -.3px; }
        .more-link { font-size: 14px; font-weight: 600; color: var(--primary); transition: var(--transition); }
        .more-link:hover { color: var(--primary-dark); }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            padding: 24px 22px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
        .news-card .news-cat {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover h3 { color: var(--primary); }
        .news-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card time { font-size: 12px; color: #9ca3af; }

        .cta-block {
            margin-top: 48px;
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            background-image: linear-gradient(135deg, rgba(124,58,237,.92), rgba(91,33,182,.95)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block h2 { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
        .cta-block p { color: rgba(255,255,255,.85); max-width: 560px; margin: 0 auto 26px; font-size: 15px; }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #111 !important;
            padding: 13px 30px;
            border-radius: 30px;
            font-weight: 700;
            border: 0;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(245,158,11,.4);
            font-size: 15px;
        }
        .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 10px 28px rgba(245,158,11,.5); }

        .faq-section { margin-top: 48px; }
        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            background: var(--bg-card);
            color: var(--text-main);
            font-size: 16px;
            font-weight: 650;
            padding: 18px 22px;
            box-shadow: none;
            border: 0;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(124,58,237,.18);
            border-radius: var(--radius);
        }
        .faq-accordion .accordion-body {
            padding: 4px 22px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid var(--border);
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            filter: hue-rotate(250deg);
        }

        .site-footer {
            background: var(--bg-sidebar);
            color: rgba(255,255,255,.7);
            padding: 50px 0 24px;
            margin-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 34px;
            border-bottom: 1px solid rgba(255,255,255,.08);
        }
        .footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 10px; }
        .footer-grid p { font-size: 14px; line-height: 1.8; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 14px; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul a { font-size: 14px; color: rgba(255,255,255,.6); transition: var(--transition); }
        .footer-col ul a:hover { color: var(--accent); padding-left: 5px; }
        .footer-bottom { padding-top: 22px; text-align: center; font-size: 13px; color: rgba(255,255,255,.4); }

        .btn-main {
            display: inline-block;
            background: var(--primary);
            color: #fff !important;
            padding: 11px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 0;
        }
        .btn-main:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(124,58,237,.3); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-side { display: grid; grid-template-columns: 1fr 1fr; align-items: start; }
            .related-grid { grid-template-columns: repeat(3, 1fr); }
        }
        @media (max-width: 900px) {
            .sidebar { transform: translateX(-100%); width: 280px; box-shadow: 20px 0 50px rgba(0,0,0,.2); }
            .sidebar.open { transform: translateX(0); }
            .mobile-topbar { display: flex; }
            .mobile-mask.show { display: block; }
            .main-wrap { margin-left: 0; padding-top: 64px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 600px) {
            .container-narrow { padding: 0 16px; }
            .article-card { padding: 24px 20px; }
            .article-title { font-size: 24px; }
            .article-banner img { height: 200px; }
            .related-grid { grid-template-columns: 1fr; }
            .article-side { grid-template-columns: 1fr; }
            .cta-block { padding: 38px 22px; }
            .cta-block h2 { font-size: 22px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .section-head h2 { font-size: 20px; }
            .article-body { font-size: 15px; }
            .breadcrumb-nav { padding-top: 18px; font-size: 13px; }
            .article-meta { gap: 12px; font-size: 13px; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #4f6df5;
            --primary-dark: #3a55d6;
            --primary-light: #eef1fe;
            --accent: #ff6b35;
            --accent-dark: #e85526;
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #1a2233;
            --text-light: #6b7a90;
            --text-muted: #8e9aaf;
            --border: #e6eaf2;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 4px 24px rgba(26, 34, 51, 0.07);
            --shadow-lg: 0 14px 44px rgba(26, 34, 51, 0.12);
            --transition: all 0.3s ease;
            --sidebar-width: 272px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }
        .container-narrow {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* ===== App Shell 布局 ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--surface);
            border-right: 1px solid var(--border);
            z-index: 1050;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease;
        }
        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 28px 20px;
            overflow-y: auto;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 4px 8px 24px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 24px;
        }
        .logo-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: 0.5px;
            box-shadow: 0 6px 16px rgba(79, 109, 245, 0.3);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 16px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: 0.3px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .sidebar-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(2px);
        }
        .sidebar-link:hover i {
            color: var(--primary);
        }
        .sidebar-link.active {
            background: var(--primary);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 8px 20px rgba(79, 109, 245, 0.28);
        }
        .sidebar-link.active i {
            color: #fff;
        }
        .sidebar-footer {
            padding-top: 20px;
            border-top: 1px solid var(--border);
            margin-top: 16px;
        }
        .sidebar-footer .btn {
            width: 100%;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            z-index: 1040;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(26, 34, 51, 0.05);
        }
        .menu-toggle {
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            background: var(--surface);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-logo {
            font-size: 17px;
            font-weight: 800;
            color: var(--text);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.45);
            backdrop-filter: blur(2px);
            z-index: 1045;
            transition: opacity 0.3s ease;
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* ===== 主内容 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .content-wrapper {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }
        .main-content>.content-wrapper {
            flex: 1;
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(26, 34, 51, 0.82), rgba(58, 85, 214, 0.78)), url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
            padding: 96px 0 88px;
            color: #fff;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
            padding: 0;
            background: transparent;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .page-hero h1 {
            font-size: clamp(30px, 4vw, 46px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 1px;
            line-height: 1.25;
        }
        .page-hero .hero-subtitle {
            font-size: clamp(15px, 1.6vw, 18px);
            color: rgba(255, 255, 255, 0.88);
            max-width: 720px;
            margin-bottom: 30px;
            line-height: 1.75;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(79, 109, 245, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(79, 109, 245, 0.4);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 18px rgba(255, 107, 53, 0.3);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(255, 107, 53, 0.4);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        .btn-outline-dark {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-dark:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-light);
            max-width: 680px;
            margin-bottom: 44px;
            line-height: 1.7;
        }
        .section-head-center {
            text-align: center;
        }
        .section-head-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 卡片基础 ===== */
        .card-custom {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 30px;
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 109, 245, 0.25);
        }

        /* ===== 入口方式卡片 ===== */
        .entry-card .entry-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            color: var(--primary);
            background: var(--primary-light);
            transition: var(--transition);
        }
        .entry-card:hover .entry-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
            box-shadow: 0 8px 20px rgba(79, 109, 245, 0.3);
        }
        .entry-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .entry-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 流程步骤 ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
            max-width: 720px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 22px;
            align-items: flex-start;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 28px;
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }
        .step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 6px 16px rgba(79, 109, 245, 0.28);
        }
        .step-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== 指南内容卡片 ===== */
        .guide-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .guide-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--primary-light);
        }
        .guide-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .guide-cover img {
            transform: scale(1.06);
        }
        .guide-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(26, 34, 51, 0.30) 100%);
        }
        .guide-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
        }
        .guide-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
        }
        .guide-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }
        .guide-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* ===== 安全提醒 ===== */
        .safety-section {
            background: linear-gradient(135deg, #1a2233 0%, #131c2c 100%);
            padding: 72px 0;
        }
        .safety-section .section-title,
        .safety-section .section-desc {
            color: #fff;
        }
        .safety-section .section-desc {
            color: rgba(255, 255, 255, 0.75);
        }
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .safety-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            transition: var(--transition);
        }
        .safety-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .safety-item i {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .safety-item h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .safety-item p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            line-height: 1.6;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(79, 109, 245, 0.25);
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            background: #fafbfd;
            border-top: 1px dashed var(--border);
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 88px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: calc(var(--radius) + 8px);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            top: -120px;
            right: -80px;
        }
        .cta-box::after {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            bottom: -90px;
            left: -60px;
        }
        .cta-box h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn {
            position: relative;
            z-index: 1;
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
        }
        .btn-white:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #131c2c;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-grid p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col ul {
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 22px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 991px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }
            .content-wrapper {
                padding: 0 20px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero {
                padding: 70px 0 64px;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: 64px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 44px 24px;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }
        @media (max-width: 575px) {
            .section-title {
                font-size: 24px;
            }
            .step-item {
                flex-direction: column;
                gap: 14px;
            }
            .card-custom {
                padding: 24px 20px;
            }
        }

        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(79, 109, 245, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category3 */
:root {
            --brand: #6366f1;
            --brand-deep: #4f46e5;
            --brand-soft: #eef2ff;
            --accent: #f59e0b;
            --accent-deep: #d97706;
            --sidebar-bg: #0f172a;
            --sidebar-text: #94a3b8;
            --bg-page: #f1f5f9;
            --bg-surface: #ffffff;
            --bg-soft: #f8fafc;
            --text-heading: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --border-soft: #e2e8f0;
            --radius-large: 20px;
            --radius-medium: 14px;
            --radius-small: 10px;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, .06);
            --shadow-lg: 0 16px 44px rgba(15, 23, 42, .10);
            --sidebar-width: 248px;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-page);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: var(--brand-deep);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button:focus,
        a:focus,
        input:focus {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-narrow {
            max-width: 960px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== 按钮 ===== */
        .btn {
            padding: 12px 26px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-custom-primary {
            background: linear-gradient(135deg, var(--brand), var(--brand-deep));
            color: #fff;
            border: none;
            box-shadow: 0 6px 18px rgba(99, 102, 241, .28);
        }

        .btn-custom-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(99, 102, 241, .38);
        }

        .btn-custom-ghost {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .32);
            backdrop-filter: blur(6px);
        }

        .btn-custom-ghost:hover {
            background: rgba(255, 255, 255, .2);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 侧边栏 ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--sidebar-bg);
            padding: 24px 16px 20px;
            display: flex;
            flex-direction: column;
            z-index: 1050;
            transform: translateX(-100%);
            transition: transform .3s cubic-bezier(.4, 0, .2, 1);
            box-shadow: 4px 0 24px rgba(0, 0, 0, .12);
        }

        .app-sidebar.sidebar-open {
            transform: translateX(0);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            padding: 10px 12px 26px;
            letter-spacing: .02em;
            line-height: 1.4;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            margin-bottom: 18px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--sidebar-text);
            font-weight: 600;
            font-size: 15px;
            transition: background .2s ease, color .2s ease, transform .2s ease;
        }

        .sidebar-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .sidebar-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .sidebar-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--brand), var(--brand-deep));
            box-shadow: 0 6px 16px rgba(99, 102, 241, .35);
        }

        .sidebar-status {
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 12px;
            background: rgba(255, 255, 255, .05);
            border-radius: 12px;
            color: var(--sidebar-text);
            font-size: 13px;
            font-weight: 600;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10b981;
            box-shadow: 0 0 0 4px rgba(16, 185, 129, .15);
        }

        /* ===== 移动端头部 ===== */
        .mobile-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 20px;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-soft);
        }

        .menu-toggle {
            border: none;
            background: transparent;
            color: var(--text-heading);
            font-size: 20px;
            padding: 8px 10px;
            border-radius: 10px;
            line-height: 1;
        }

        .mobile-brand {
            font-weight: 800;
            font-size: 17px;
            color: var(--text-heading);
            letter-spacing: .01em;
        }

        .mobile-cta {
            margin-left: auto;
            background: linear-gradient(135deg, var(--brand), var(--brand-deep));
            color: #fff;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(99, 102, 241, .25);
        }

        .mobile-cta:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(99, 102, 241, .32);
        }

        .sidebar-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, .5);
            z-index: 1045;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
        }

        .sidebar-backdrop.show {
            opacity: 1;
            visibility: visible;
        }

        /* ===== main wrap ===== */
        .main-wrap {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 分类 hero ===== */
        .category-hero {
            position: relative;
            padding: 88px 0 84px;
            color: #fff;
            background: linear-gradient(115deg, rgba(15, 23, 42, .94) 0%, rgba(30, 27, 75, .82) 50%, rgba(99, 102, 241, .30) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 4px solid var(--accent);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            color: #fff;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-badge::before {
            content: '';
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
        }

        .category-hero h1 {
            font-size: clamp(30px, 4.4vw, 46px);
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: .01em;
        }

        .category-hero p {
            font-size: 17px;
            opacity: .92;
            max-width: 680px;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ===== 标签区 ===== */
        .topic-tags {
            padding: 26px 0;
            background: var(--bg-page);
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 999px;
            background: var(--bg-surface);
            border: 1px solid var(--border-soft);
            color: var(--text-muted);
            font-weight: 600;
            font-size: 14px;
            transition: all .2s ease;
        }

        .tag-chip:hover,
        .tag-chip.active {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
            box-shadow: 0 4px 14px rgba(99, 102, 241, .22);
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 72px 0;
        }

        .section-head {
            margin-bottom: 40px;
            max-width: 680px;
        }

        .section-head.light {
            color: #fff;
        }

        .section-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand);
            text-transform: uppercase;
            letter-spacing: .08em;
            margin-bottom: 8px;
        }

        .section-head.light .section-kicker {
            color: var(--accent);
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .section-head.light h2 {
            color: #fff;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 15px;
        }

        .section-head.light p {
            color: rgba(255, 255, 255, .72);
        }

        /* ===== 资讯卡片 ===== */
        .news-section {
            background: var(--bg-page);
        }

        .news-card {
            background: var(--bg-surface);
            border-radius: var(--radius-medium);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .2s ease;
            height: 100%;
            border: 1px solid var(--border-soft);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, .25);
        }

        .news-card-media {
            position: relative;
            height: 172px;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .news-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .news-card:hover .news-card-media img {
            transform: scale(1.05);
        }

        .news-card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(15, 23, 42, .76);
            color: #fff;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .03em;
            backdrop-filter: blur(4px);
        }

        .news-card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card-date {
            color: var(--text-muted);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }

        .news-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .news-card-body h3 a {
            color: inherit;
        }

        .news-card-body h3 a:hover {
            color: var(--brand);
        }

        .news-card-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .news-card-more {
            font-weight: 700;
            font-size: 14px;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-card-more i {
            transition: transform .2s ease;
            font-size: 12px;
        }

        .news-card-more:hover i {
            transform: translateX(4px);
        }

        /* ===== 热门资讯排行 ===== */
        .trending-wrap {
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 60%, #312e81 100%);
            position: relative;
            overflow: hidden;
        }

        .trending-wrap::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .08);
        }

        .trending-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        .trending-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 22px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: var(--radius-medium);
            transition: background .2s ease, border-color .2s ease, transform .2s ease;
        }

        .trending-item:hover {
            background: rgba(255, 255, 255, .09);
            border-color: rgba(245, 158, 11, .3);
            transform: translateX(4px);
        }

        .trending-rank {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            min-width: 40px;
            text-align: center;
            font-style: italic;
            line-height: 1;
        }

        .trending-info {
            flex: 1;
            min-width: 0;
        }

        .trending-info h3 {
            font-size: 16px;
            font-weight: 700;
            color: rgba(255, 255, 255, .92);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .trending-info p {
            font-size: 13px;
            color: rgba(255, 255, 255, .52);
            margin: 0;
        }

        .trending-meta {
            font-size: 13px;
            color: rgba(255, 255, 255, .42);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        @media (min-width: 768px) {
            .trending-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== 公告板块 ===== */
        .announce-section {
            background: var(--bg-surface);
        }

        .announce-card {
            background: var(--bg-soft);
            border: 1px solid var(--border-soft);
            border-left: 4px solid var(--accent);
            border-radius: var(--radius-medium);
            padding: 26px;
            height: 100%;
            transition: box-shadow .25s ease, transform .25s ease;
        }

        .announce-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .announce-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-deep);
            background: rgba(245, 158, 11, .1);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .announce-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .announce-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 14px;
        }

        .announce-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-page);
        }

        .stat-card {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-surface);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-large);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .stat-num {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.2;
            margin-bottom: 6px;
            background: linear-gradient(135deg, var(--brand), var(--brand-deep));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-surface);
        }

        .faq-section .section-head {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-medium) !important;
            overflow: hidden;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            background: var(--bg-surface);
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--brand);
            background: var(--brand-soft);
        }

        .accordion-button:focus {
            box-shadow: none !important;
            outline: 2px solid var(--brand);
            outline-offset: -2px;
        }

        .accordion-body {
            padding: 18px 22px;
            color: var(--text-muted);
            font-size: 15px;
            background: var(--bg-surface);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-page);
        }

        .cta-card {
            background: linear-gradient(135deg, var(--brand), var(--brand-deep) 45%, #7c3aed);
            color: #fff;
            border-radius: var(--radius-large);
            padding: 56px 32px;
            text-align: center;
            box-shadow: 0 20px 48px rgba(79, 70, 229, .28);
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .1);
        }

        .cta-card h2 {
            font-size: clamp(24px, 3.2vw, 36px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 16px;
            opacity: .9;
            max-width: 560px;
            margin: 0 auto 30px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .btn-custom-light {
            background: #fff;
            color: var(--brand-deep);
            border: none;
        }

        .btn-custom-light:hover {
            background: #f1f5f9;
            color: var(--brand-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .1);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 56px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
        }

        .footer-brand {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: .02em;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: #94a3b8;
            font-size: 14px;
            transition: color .2s ease, padding-left .2s ease;
        }

        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 44px;
            padding: 18px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .38);
        }

        /* ===== 响应式 ===== */
        @media (min-width: 992px) {
            .app-sidebar {
                transform: translateX(0);
            }

            .main-wrap {
                margin-left: var(--sidebar-width);
            }

            .mobile-header {
                display: none;
            }

            .sidebar-backdrop {
                display: none;
            }
        }

        @media (max-width: 991.98px) {
            .category-hero {
                padding: 64px 0;
            }

            .section-block {
                padding: 56px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .category-hero h1 {
                font-size: 30px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .news-card-media {
                height: 150px;
            }

            .trending-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px;
            }

            .trending-meta {
                width: 100%;
                margin-left: 58px;
            }

            .cta-card {
                padding: 40px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .section-block {
                padding: 44px 0;
            }

            .topic-tags {
                padding: 18px 0;
            }

            .tag-chip {
                font-size: 13px;
                padding: 7px 14px;
            }

            .mobile-brand {
                font-size: 15px;
            }

            .mobile-cta {
                padding: 7px 14px;
                font-size: 12px;
            }

            .news-card-body {
                padding: 18px;
            }

            .news-card-body h3 {
                font-size: 16px;
            }

            .stat-card {
                padding: 26px 16px;
            }

            .accordion-button {
                padding: 15px 16px;
                font-size: 15px;
            }
        }